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Патент USA US2405410

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Aug. 65, 1946.
2,405,410
i A_. DAVENPORT
. FEED-1N6 MECHANISM FOR RI'NG DOUBLING' AND‘ LIKE FRAMES
‘
Filed Feb. ' 24, 1945
137
IO
Inventor
a
y-
.
2,405,41
Patented Aug. 6,’ 1946
2,405,410
FEEDING MECHANISM FOR RING DOUBLING
AND LIKE FRAMES
Arthur Davenport, Maccles?eld, England
Application February 24, 1945, Serial No. 579,575
In Great Britain February 29, 1944.
3 Claims.
1
(C1. 57—90)
2
a few turns round a roller interposed between the
grooved roller i5 and the bottom an eye 16. De
tachably mounted on the shaft 9 is a pulley i1
shown in section in Fig. 3. This pulley has a
face It with a hole [9 to pass over the shaft 9
and the hole 29 to engage the peg [2 so that the
pulley is rotatably connected to the shaft 9 and
is secured on it by a headed screw, screwed into
the shaft. The pulley has a flange 22 at one side
and may have one at the other, and the flat face
10 ofthe pulley has a zig-zag groove 23 of Y section.
top and bottom bobbins, This arrangement is
not wholly satisfactory in that the pull is not al
bobbins on the creel above and is wound once
This invention has reference to ring doubling
and like frames and refers more particularly,
though not exclusively, to such frames for dou
bling arti?cial silk yarns.
In frames of this kind the yarn to be doubled
is on bobbins on a creel and several ends are car
ried down to be doubled on a bobbin below and in
order to obtain the necessary pull on the bobbins
above, the yarn has usually, hitherto, been given
The yarn 24 to be doubled is drawn from the
round the pulley from front to back, lying in the
V groove 23, and is then taken off at the front
roller, which as will be understood is positively 15 over the pulley is, through the eye I6 to the bob
bin below on which it is wound. In order to
driven, and its gear box or mounting, occupies
avoid any rubbing of the yarn the pulley i5 is
more space than is desirable.
to one side of the pulley ll, so that the yarn com
This invention has for its object to provide
ing off does not rub on the yarn running on.
improvements whereby the objections mentioned
ways even, there is a tendency for the yarn to
slip over though the roller be grooved and the
above can be avoided and according to the in
vention instead of the rollers referred to, there
is used a pulley having formed in its periphery a
zig-zag Y-shaped groove in which groove the
yarn lies.
It is found that the zig-zag form of the groove
of Y-shape provides a greater grip on the yarn
than the old grooved roller and the doubling can
proceed more rapidly and with much less trouble
and fewer breakages, as the yarn easily slips into
The invention is more particularly set forth 25 the top or V part of the groove which guides it
into the stem of the Y, which, being zig-zag holds
with reference to the accompanying drawing, of
the yarn ?rmly until released by passing out over
which
the V roller.
What I claim as my invention and desire to
Fig. 2 is a side view of the bracket and pulley 30 secure by Letters Patent is:
1. In a ring doubling or like frame having a
support as seen from the right of Fig. 1.
creel provided with yarn-carrying bobbins and
Fig. 3 is a section of the pulley and
winding bobbins, a solid one-piece yarn pulley
Fig. 4 an elevation of the spindle.
disposed in the path of the yarn as it passes from
As shown in the drawing a bracket 5 is mounted
the bobbins of the creel to the winding bobbins,
on a rod 6 by which the bracket and all it carries
said pulley having an axially flat periphery pro
can be raised and lowered, out of and into contact
vided with a Y-shaped zig-zag groove in which
with a pinion, not shown on a driving shaft below,
the yarn is directed during its passage from one
and running the length of the frame. This
set of bobbins to the other.
bracket 5 carriers on it an idler pinion ‘l for en
2. In a ring doubling or like frame having a
gaging the pinion on the driving shaft below and
creel provided with yarn-carrying bobbins and
also engaging a pinion 8 on a shaft 9 passing
winding bobbins, a solid one-piece yarn ‘pulley
through the bracket, and which, by means of this
disposed in the path of the yarn as it passes from
invention is much shorter than the shaft now
the bobbins of the creel to the winding bobbins,
used for carrying a long and grooved roller, the
removal of the roller and the shortening of the 45 said pulley having an axially flat periphery pro
vided with a Y-shaped zig-zag groove in which
shaft being a great convenience and advantage.
the yarn is directed during its passage from one
The shaft 9 is rotatably mounted in a bushing
set of bobbins to the other, said pulley having an
and projects to one side of a circular plate l0
integral ?ange at one side thereof, projecting
forming part of the bracket 5. This circular
plate has a circular recess in its other face and 50 beyond the periphery of the pulley.
3. In a ring doubling or like frame having a
there rotates in this recess a plate I l on the shaft
Fig. 1 is a front elevation of a pulley mounted
‘ on its bracket.
9 which is hollow, and internally screwed; the
plate H has on it a peg l2. The plate H! has
two arms 13 and M from which project rods par
allel with the shaft 9 the top one [3 carrying a
creel provided with yarn-carrying bobbins and
winding bobbins, a shaft supported for rotation
in the path of the yarn as it passes from the bob
bins of the creel to the winding bobbins, a plate
3
2,405,410
4
secured on said shaft and having a stud project
a complementary hole for engagement with said
ing from one face thereof and, a solid one-piece
stud thereby to cause rotation of the pulley with
yarn pulley mounted for rotation on one end of
said shaft, said shaft being inwardly threaded at
said shaft and having an axially ?at periphery
its pulley-carrying end for the reception of fas
provided with a Y-shaped zig-zag'groove in which 5 tening means for retaining the pulley in engage
the yarn is directed during its passage from one
ment with said stud.
set of bobbins to the other, said pulley having
ARTHUR DAVENPORT.
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